
Title (eg) :
IoT produced in WIZ550io + ATMega328, also MQTT
#1 Overview :
With MQTT, Author controlled LED at the first as a test. Then sensing CDS to monitor on the web with sending the value to the MQTT server. Installed module the WIZ550io in SPI communication with 100BaseTX.
#2 Parts :
WIZ550io v1.1
ATmega328P-PU
Step-down regulator 3.3
470uF capacitor
Micro USB
#3 Wired :
[WIZ550io] to [ATmega328]
MOSI ——— D11
MISO ——— D12
SCLK ——— D13
SCSn ——— D10
3.3V ——— 3.3V
GND ——— GND
This information is for SPI communication .
User can refer this posting (http://knaka0209.blogspot.jp/2015/10/mqtt-2.html) how to build LED control with MQTT
This below picture is the hardware for sensing the illumination with CDS.
#4 Summary
The Author says UNO will be easier than this. In the project, one thing realizing is switch response of the via MQTT is fast and also can control or sensing multiple things.
MQTT Preparation. Arduino EtherNet, PAHO-MQTT (over WebSocket)Http://Knaka0209.Blogspot.Jp/2015/10/mqtt-1.HtmlMQTT use of knitting. IoT type switch Arduino EtherNet
Author : Knakashima
Blog : http://knaka0209.blogspot.kr/2015/10/wiz550io-1.html
Code : https://gist.github.com/kuc-arc-f/16a716a241e1a193a521#file-mqtt-arduino_sensor_3-ino
TAG: WIZ550io, ATMega328, MQTT
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